I take DD (18 months) to a playgroup. In this group there are quite afew 2/3 years olds who go round pushing smaller children including my DD out the way, stealing toys etc.
Their parents do occasionally get involved normally if it results in crying. But a lot of it goes ignored.
Before DD I literally have no knowledge of children. I don't want to be judgemental as I genuinely don't know if this is normal behaviour and if my DD may become like this when she is that age? Is this the terrible twos I'm witnessing?
In a way I can't expect the parents to say something every time as they would probably be constantly shouting at them.